What the graphic is telling us is, no matter how big the effort is to switch to renewables+ev's, etc., the fast growth of emerging economies, less prone to become green as fast as, say, EU, will lead to a sustainable and even increasing use of fossil fuels.
The best scenario, in my opinion: fossil fuel prices skyrocketing + some political agreements to boost smart subsidies where there are needed, to make renewables cheaper than coal. As Google.org says, RE<C (where "RE" is renewables and "C" is coal.)
60% of EU budget goes to farmers subsidies. USA subsidizes also monocrops such as corn (leading to massive use of corn syrup, packaged food, boosting obesity.)
So less subsidies to lobbies and more to renewables. And more electric cars on the roads.
I've driven some cool EV's and I only say this: it's really fun. Waiting for the 4 new Renaults to come in 2011-2012 and, specially, a smaller-cheaper version of the Tesla Model S.
All that said, I don't own a car.